Storage management device, storage management method, and storage system
US8266475B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Mar 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1441
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A storage system includes data storage devices, spare storage devices used when a failure occurs in a data storage devices, a group management unit that divides the data storage devices into groups and implements a redundancy, a data storage device restoration unit that assigns the spare storage device as a replacement when a failure occurs, and a configuration change unit changing configuration of the group to which the data storage devices belong. The configuration change unit includes, a spare storage device securing unit that secures the spare storage device, a change processor that writes data concerning the group into the spare storage device, and a change restoration unit that performs continuation of the configuration change, or restoration of the group to a state in a start, using the data written into the spare storage device when the configuration change of the group is interrupted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.